What are the conditions for a full garbage collection (full GC) in Jira Server?

[jianbo qu]

What are the conditions for a full garbage collection (full GC) in Jira Server?

when jvm out of memory？

[Kian Stack Mumo Systems · Accepted solution]

@jianbo qu, 

I was doing some research into this as well. It looks like the JVM being out of memory will trigger full GC, but it can also be triggered by filling up your permgen segment of the heap. There may be additional conditions which trigger it, but it's a fairly complex subject!

[Dan Breyen · Accepted solution]

Hi jianbo, I couldn't find anything specific on full GC for Jira, but I found this article regarding  garbage collecting in general for Jira. Tuning GC 

I believe you're right that it has to do with memory allocating.  I also found this document on Application Memory.  Increasing JVM Memory 

I hope this helps